No matter in Arcuz or Arcuz 2, the items combinations/compositions are one of the special and critical parts of the game. You do not just obtain the weapons, armors or the accessories through the shops or being dropped by the enemies, but also can combine/compose with the crystals to enhance the equipments. Weapons can have abilities to cast Fire, Ice, Thunder or Poison which cause extra damages. While armors increase the block chances and magic resistance. The accessories can help increase your critical attack, attack and defense bonus, drop rate, extra weight, and others, depending on which crystals you use. There are 4 crystals: Wind Crystal (Green), Earth Crystal (Brown), Fire Crystal (Red) and Water Crystal (Blue). No worry, you can purchase them from the shop. (In Arcuz 2, you can buy them through a Goblin Merchant (Geb) in the Dungeon 5 (D5).)